IPA: //ˈmɛθəˌdriːn//
KK: /mɛθəˌdrin/
A powerful and addictive central nervous system stimulant that affects the brain, often used illegally as a drug.
The police found a large quantity of methedrine during the raid.
Methedrine is a trademark name derived from the chemical name methamphetamine, which is formed from "meth-" (a prefix indicating a one-carbon unit, derived from the Greek "methy" meaning alcohol) and "amphetamine" (from "alpha" and "methyl" combined with "phenethylamine", a compound related to the structure of the molecule). The word refers to a specific type of amphetamine that has a methyl group added, enhancing its potency as a stimulant.
Think of 'meth-' as relating to a one-carbon unit and 'amphetamine' as a type of stimulant. This helps you remember that methedrine is a powerful stimulant derived from methamphetamine.